Re: stripped and seized bolt - how to remove
you can take an air cutoff wheel or dremel to cut a slot in it and use a big flat blade screwdriver to get some torque on it. ive always read you want to heat the bolt directly. this way, the bolt will expand slightly and when it cools, it will contract and break the rust or corrosion causing it to seize.
at very worst, start with a 1/4" drill bit and work your way up to bigger bits, drilling all the way through the plug. once you get a hole big enough, you can use an awl to tap the remaining part out.